CW494 Double-pointed convertor switching regulated power supply circuit diagram

Published:2011/3/27 20:30:00 Author:Ecco | Keyword: Double-pointed convertor , regulated power supply | From:SeekIC

The circuit diagram CW494 is a type of modulator integrated circuit made from of double-pointed convertor, including an error amplifier, reference voltage source, clock oscillator and vein breadth modulator,etc. The transformer T1 is a high - frequency transformer, which can deliver the energy to the burden. The T2 is a type of driving push transformer, which can deliver the two energizing pulses put by CW494 pulse modulator and amplifiered by energizing drive transistor. And the pulses reach the drive and base of switching tube in push-pull converter circuit diagram. After the variation of voltage and rectification of the pulses from samlping resistance by voltage transformer. The samlping resistance sends the pulses to the pulse modulator circuit diagram CW494, and to be the inverting input of error amplifier. Moreover, the switching power tube adopts rapid series F461. In the places of the feedback fo voltage , the input and output are connected directly. When the input, output need to be insulated, it can adopt photocoupler.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Power_Supply_Circuit/CW494_Double_pointed_convertor_switching_regulated_power_supply_circuit_diagram.html

Print this Page | Comments | Reading(3)